Lars watched the fishermen taking the livers out of the fish and boxing them. He knew that many of the livers would be sent to Hammerfest where he lived, and there they would be made into cod-liver oil. The Giants of the North Lands Once upon a time very strong giants lived on the high mountains of the North lands. So fairy tales of the far north say. And according to those tales, the giants pulled up great bits of earth leaving deep hollow places between rocky walls. Water from the sea filled those hollow places, so arms of the sea ran far back into the land. And those giants also tore great rocks out of the earth and tossed them at each other in their battles. So even the tops of the mountains are rough and uneven with the holes they tore in the earth and huge rocks lie on the ground where they tossed them. Visitors to that part of Norway called Jotunheim, which means the “Home of the Giants,” might believe that those fairy tales were true. For they see the arms of the sea running between the mountain walls and the rough land on top of the mountains. Surely none but giants’ hands could have torn the land into such shapes! [Illustration: FREDRIK] But when they go to the tops of the mountains, they see some _real giants_ like those which, long, long ago, did cut the land of Norway and Sweden and Denmark into strange forms. Those giants are sheets of ice. We call them glaciers. Before travelers in the mountains get near the large ice-sheets, they see tongues of glaciers which look like rivers of ice running down the side of the mountain. Fredrik is a Norwegian boy who helps many travelers see a glacier. His father drives an automobile for a large hotel in the mountains. He takes the guests from the hotel to see the glacier. When Fredrik is not in school, he goes with his father. Fredrik opens the many gates. For the car must travel through lands which belong to different farmers. The gates must be kept shut so that the cattle will not stray away from their own land. Fredrik often tells the visitors what caused those rivers of ice. Snow and sleet fell on the mountains. The cold on the high peaks kept the snow from melting away, so year after year the snow gathered there. The load of snow became heavier and heavier. The snow melted a little, then froze again, until it formed a great ice sheet which we call a glacier. Some of the ice moved slowly down the mountain side. It formed the rivers of ice which the travelers see on the mountain slopes. But as the rivers of ice got lower down the mountain, the ice melted, but it melted very, very slowly. Little by little, only a few inches a year, the river of ice has moved back. As the ice moved down the slopes it carried under it big rocks and fine gravel. Great heaps of the rock and gravel are left behind when the ice melts. From those rocks men can tell just how far the ice moves back each year. [Illustration: WALKING ON A GLACIER]